Browsing Bergen Open Research Archive by Author "Steen-Larsen, Hans Christian"
Now showing items 1-20 of 23
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A 4.5 Year‐Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin
Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2020)From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-Ålesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest ... -
Atmosphere-Snow Exchange Explains Surface Snow Isotope Variability
Wahl, Sonja; Steen-Larsen, Hans Christian; Hughes, A.G.; Dietrich, Laura Jasmin; Zuhr, A.; Behrens, M.; Faber, Anne-Katrine; Hörhold, M. (Journal article; Peer reviewed, 2022)The climate signal imprinted in the snow isotopic composition allows to infer past climate variability from ice core stable water isotope records. The concurrent evolution of vapor and surface snow isotopic composition ... -
Continuous monitoring of the isotopic composition of surface water vapor at Lhasa, southern Tibetan Plateau
Dai, Di; Gao, Jing; Steen-Larsen, Hans Christian; Yao, Tandong; Ma, Yaoming; Zhu, Meilin; Li, Shenghai (Journal article; Peer reviewed, 2021)The stable isotopes (δ18O and δD) of water vapor are used to characterize continuous variations in large-scale and boundary-layer atmospheric processes. We presented continuous measurements of δ18O in surface water vapor ... -
The Determination of the Snow Optical Grain Diameter and Snowmelt Area on the Greenland Ice Sheet Using Spaceborne Optical Observations
Vandecrux, Baptiste; Box, Jason E.; Wehrlé, Adrien; Kokhanovsky, Alexander A.; Picard, Ghislain; Niwano, Masashi; Hörhold, Maria; Faber, Anne-Katrine; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2022)The optical diameter of the surface snow grains impacts the amount of energy absorbed by the surface and therefore the onset and magnitude of surface melt. Snow grains respond to surface heating through grain metamorphism ... -
The Dominant Role of Brewer-Dobson Circulation on 17O-Excess Variations in Snow Pits at Dome A, Antarctica
Pang, Hongxi; Zhang, Peng; Wu, Shuangye; Jouzel, Jean; Steen-Larsen, Hans Christian; Liu, Ke; Zhang, Wangbin; Yu, Jinhai; An, Chunlei; Chen, Deliang; Hou, Shugui (Journal article; Peer reviewed, 2022)Recent studies have suggested that water isotopologues in snow pits from remote East Antarctica can be influenced by the input of stratospheric water, which has anomalously high 17O-excess values. However, it remains unclear ... -
Experimental investigation of the stable water isotope distribution in an Alpine lake environment (L-WAIVE)
Chazette, Patrick; Flamant, Cyrille; Sodemann, Harald; Totems, Julien; Monod, Anne; Dieudonné, Elsa; Baron, Alexandre; Seidl, Andrew Walter; Steen-Larsen, Hans Christian; Doira, Pascal; Durand, Amandine; Ravier, Sylvain (Journal article; Peer reviewed, 2021)In order to gain understanding on the vertical structure of atmospheric water vapour above mountain lakes and to assess its link with the isotopic composition of the lake water and with small-scale dynamics (i.e. valley ... -
Exploring the role of snow metamorphism on the isotopic composition of the surface snow at EastGRIP
Harris Stuart, Romilly; Faber, Anne-Katrine; Wahl, Sonja; Hörhold, Maria; Kipfstuhl, Sepp; Vasskog, Kristian; Behrens, Melanie; Zuhr, Alexandra M.; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2023)Stable water isotopes from polar ice cores are invaluable high-resolution climate proxy records. Recent studies have aimed to improve our understanding of how the climate signal is stored in the stable water isotope record ... -
Local-scale deposition of surface snow on the Greenland ice sheet
Zuhr, Alexandra M.; Münch, Thomas; Steen-Larsen, Hans Christian; Hörhold, Maria; Laepple, Thomas (Journal article; Peer reviewed, 2021)Ice cores from polar ice sheets and glaciers are an important climate archive. Snow layers, consecutively deposited and buried, contain climatic information from the time of their formation. However, particularly ... -
Meridional and vertical variations of the water vapour isotopic composition in the marine boundary layer over the Atlantic and Southern Ocean
Thurnherr, Iris; Kozachek, Anna V.; Graf, Pascal; Weng, Yongbiao; Bolshiyanov, Dimitri Yu.; Landwehr, Sebastian; Pfahl, Stephan; Schmale, Julia; Sodemann, Harald; Steen-Larsen, Hans Christian; Toffoli, Alessandro; Wernli, Heini; Aemisegger, Franziska (Journal article; Peer reviewed, 2020)Stable water isotopologues (SWIs) are useful tracers of moist diabatic processes in the atmospheric water cycle. They provide a framework to analyse moist processes on a range of timescales from large-scale moisture transport ... -
A modular field system for near-surface, vertical profiling of the atmospheric composition in harsh environments using cavity ring-down spectroscopy
Seidl, Andrew Walter; Sodemann, Harald; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2023)Cavity ring-down spectroscopy (CRDS) has allowed for increasingly widespread, in situ observations of trace gases, including the stable isotopic composition of water vapor. However, gathering observations in harsh environments ... -
Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River delta, Siberia
Bonne, Jean-Louis; Meyer, Hanno; Behrens, Melanie; Boike, Julia; Kipfstuhl, Sepp; Rabe, Benjamin; Schmidt, Toni; Schönicke, Lutz; Steen-Larsen, Hans Christian; Werner, Martin (Journal article; Peer reviewed, 2020)In the context of the Arctic amplification of climate change affecting the regional atmospheric hydrological cycle, it is crucial to characterize the present-day moisture sources of the Arctic. The isotopic composition is ... -
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region
Zannoni, Daniele; Steen-Larsen, Hans Christian; Peters, A.J.; Wahl, Sonja; Sodemann, Harald; Sveinbjörnsdóttir, A.E. (Journal article; Peer reviewed, 2022)Ocean isotopic evaporation models, such as the Craig-Gordon model, rely on the description of nonequilibrium fractionation factors that are, in general, poorly constrained. To date, only a few gradient-diffusion type ... -
North Atlantic weather regimes in δ18O of winter precipitation: isotopic fingerprint of the response in the atmospheric circulation after volcanic eruptions
GudlaugsdOttir, Hera; Sjolte, Jesper; Sveinbjörnsdóttir, Árny Erla; Werner, Martin; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2019)Equatorial volcanic eruptions are known to impact the atmospheric circulation on seasonal time scales through a strengthening of the stratospheric zonal winds followed by dynamic ocean-atmosphere coupling. This emerges as ... -
Post-depositional modification on seasonal-to-interannual timescales alters the deuterium-excess signals in summer snow layers in Greenland
Town, Michel Stephen; Steen-Larsen, Hans Christian; Wahl, Sonja; Faber, Anne-Katrine; Behrens, Melanie; Jones, Tyler R.; Sveinbjornsdottir, Arny (Journal article; Peer reviewed, 2024)We document the isotopic evolution of near-surface snow at the East Greenland Ice Core Project (EastGRIP) ice core site in northeast Greenland using a time-resolved array of 1 m deep isotope (δ18O, δD) profiles. The snow ... -
Quantifying the Stable Water Isotopologue Exchange Between the Snow Surface and Lower Atmosphere by Direct Flux Measurements
Wahl, Sonja; Steen-Larsen, Hans Christian; Reuder, Joachim; Hörhold, Maria (Journal article; Peer reviewed, 2021)Surface processes in high latitudes play an important role in global climate and thus understanding the physics of these systems is critical for improving climate projections. The characterization of the stable water ... -
Resolving the controls of water vapour isotopes in the Atlantic sector
Bonne, Jean-Louis; Behrens, Melanie K.; Meyer, Hanno; Kipfstuhl, Sepp; Rabe, Benjamin; Schonicke, Lutz; Steen-Larsen, Hans Christian; Werner, Martin (Peer reviewed; Journal article, 2019-04-09)Stable water isotopes are employed as hydrological tracers to quantify the diverse implications of atmospheric moisture for climate. They are widely used as proxies for studying past climate changes, e.g., in isotope records ... -
Retrieval of snow properties from the Sentinel-3 Ocean and Land Colour Instrument
Kokhanovsky, Alexander; Lamare, Maxim; Danne, Olaf; Brockmann, Carsten; Dumont, Marie; Picard, Ghislain; Arnaud, Laurent; Favier, Vincent; Jourdain, Bruno; Le Meur, Emmanuel; Di Mauro, Biagio; Aoki, Teruo; Niwano, Masashi; Rozanov, Vladimir; Korkin, Sergey; Kipfstuhl, Sepp; Freitag, Johannes; Hoerhold, Maria; Zuhr, Alexandra; Vladimirova, Diana; Faber, Anne-Katrine; Steen-Larsen, Hans Christian; Wahl, Sonja; Andersen, Jonas K.; Vandecrux, Baptiste; van As, Dirk; Mankoff, Kenneth D.; Kern, Michael; Zege, Eleonora; Box, Jason E. (Journal article, 2019)The Sentinel Application Platform (SNAP) architecture facilitates Earth Observation data processing. In this work, we present results from a new Snow Processor for SNAP. We also describe physical principles behind the ... -
The role of sublimation as a driver of climate signals in the water isotope content of surface snow: Laboratory and field experimental results
Hughes, Abigail G.; Wahl, Sonja; Jones, Tyler R.; Zuhr, Alexandra; Hörhold, Maria; White, James W. C.; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2021)Ice core water isotope records from Greenland and Antarctica are a valuable proxy for paleoclimate reconstruction, yet the processes influencing the climate signal stored in the isotopic composition of the snow are being ... -
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet
Zuhr, Alexandra M.; Wahl, Sonja; Steen-Larsen, Hans Christian; Hörhold, Maria; Meyer, Hanno; Laepple, Thomas (Journal article; Peer reviewed, 2023)The stable water isotopic composition in firn and ice cores provides valuable information on past climatic conditions. Because of uneven accumulation and post-depositional modifications on local spatial scales up to hundreds ... -
Snow-Atmosphere Humidity Exchange at the Ice Sheet Surface Alters Annual Mean Climate Signals in Ice Core Records
Dietrich, Laura Jasmin; Steen-Larsen, Hans Christian; Wahl, Sonja; Jones, Tyler R.; Town, Michel Stephen; Werner, Martin (Journal article; Peer reviewed, 2023)Surface processes alter the water stable isotope signal of the surface snow after deposition. However, it remains an open question to which extent surface post-depositional processes should be considered when inferring ...